Foraminifera

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Related to Forams: forms, Radiolarians

Fo·ram·i·nif·e·ra

(fō-ram'i-nif'ĕr-ă, for'ă-mi-nif'er-ă),
A subclass of Rhizopoda possessing anastomosing pseudopodia; these form a network around the cell that usually develops into a complex calcareous shell; an important component of the ocean bottom and of rockbeds overlying oil deposits.
[L. foramen, aperture, + fero, to carry]

Foraminifera

amoeboid PROTOZOANS that possess chitinous, calcareous or siliceous shells that are usually many-chambered. Calcareous Foraminifera are the main constituent of chalk.
References in periodicals archive ?
They started with modern stromatolites and added the kinds of forams that are found in thrombolites.
In drug-free samples, where forams could use pseudopods, the fine layers had changed to jumbled arrangements similar to those seen in thrombolites.
Six years ago, at the last conference devoted to the K-T question, two paleontologists reported diametrically different findings concerning the speed of foram extinctions, prompting calls for a test to resolve the discrepancy.
When forams die they fall to the seabed and add a microscopic layer of sediment to existing sand and debris.